Flour sifter



oct. l, 3o, 1923.

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1,472,264 J. BREWER FLOUR SIFTER Filed Jan. 27 1923 3 Sheets-Sheet 1 Oct 3o, 1923.

J. BREWER FLOUR SIFTER `Filed Jan. 27 192.3 3 Sheets-Sheet 2 R F. W m m m 1,472,204 J. BREWER FLoUR SIFTER Filed Jan. 27, 1925 3 sheets-sheet 5 Figi. 5.

s f (a ze' l a" Il Patented @et 3o, i923.

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JOHNSON BREWER, 0F FERR-IS, TEXAS.

FLOUB SFTER.

Application tiled January V27, $23. Serial No. 615,306.

T 0 all whom t moy-concern.'

Be it known that I, JOHNSON BREWER, a

citizen ot the United States, residing at Ferris, in the county ot Ellis, State of Texas, have invented certain new and useful Improvements in Flour Sitters; and I do hereby declare the following to be a full, clear, and eXact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

I This invention relates to new and useful improvements in flour sitters, and is an improvement on my prior Patents #1,390,334, issued September 13, 1921, and :tl-1,429,565, issued September 19, 1922.

One object of the invention is to provide a flour sitter of this character which will properly and efficiently remove all foreign matter from the flour and render the flour in good condition for use.

Another object is to provide a device of this character wherein the iiour is evenly distributed into the sitting means, and then conveyed to a suitable receptacle.

A further object is to provide novel and improved means for maintaining the brushes against movement, while the sifting drum is rotated thereabout.-

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawings.

In the drawings:

Figure 1 is a vertical longitudinal sectional view through the fiour sitter.

Figure 2 is a vertical transverse sectional view on the line 2-2 of Figure 1, looking toward the right. j

Figure 3 is an end view, showing the access door ot the casing'or housing.

Figure 4 is a vertical ,transversel sectional view on the line 4 4 of Figure 1, looking toward the left.

Reterringparticularly to the accompany- Ying drawings` 10 represents a hopper, which has a depending spout or pipe 11, and connected with one side ot this pipe isa laterally extending housing- 12` the lower portion ot' which extends beneath the lower end of the said pipe. In the outer side of the pipe 11 there are mounted the bearings 13 and 14, the former being in the upper portion of the pipe, while the latter is disposed in the lower portions thereof. In the outer end ot the housing 12,- and in horizontal alignment with the upper bearing 13, is Y similar bearing l5, and rotatably supported in these bearings are Vthe ends ot the screw conveyor shaft 1G. The end ot the shaitt 1G, below the hopper, projects beyond the side of the pi pe` and beyond the bearing 13, where it is provided with a sprocket wheel 17. En tending` longitudinally through the center of the housing 12, and into the pipe 11 is a tube 18, the portion thereoic within the pipe 11 being cut away in its upper' side to receive tiour from the bin 10. Through this tube 18 the screw conveyor 16 is disposed, and rotates. ln opposite sides ot the portion of the tube 18, within the housing 12, there are toi-med t-he longitudinally extending and spirally arranged slots 19, through which the iiour escapes into the sitter. ISecuivefil to the side of the pipe 11, around the adjacent end ot the tube 18, is a disk 20, and eXtending inwardly into the housing, from this disk, is a peripherally flanged casting 21. Disposed through the pipe, the disk, and the said casting, are the pointed pins 22, to which reference will be made later herein. In the other end of the lower portion of the housing 12 there is mounted a bearing 14', and extending longitudinally in this portion of the housing, and having its ends rotatably supported in the bearings 14 and 14, is a second screw conveyor sha-ft 23. The inner end of the shaft 23 projects beyond t-he bearing 14, and is provided with a sprocket wheel 24, around which and around the sprocket wheel 17, is engaged an endless chain 25. On the same end ot the shatt 23 there is mounted a crank handle 26, by means of which the two conveyor shafts may be rotated simultaneously, through the medium ot' the drive chain 25. n the housing, inwardly of the casting 21, there is disposed a disk 27, having a central opening 28, through which the tube 18 passes, and in this disk there are formed openings 29 which receive the betore-mentioned pins 22. and whereby the disk is maintained against rotation. In the other end of the housing is a similar disk 30, having a central opening 81 for the reception ot the adjacent end ot the tube 18. Carried by the disks 27 and 30, adjacent their p'eripheries, are the angle members, and secured to said angle members, and extending longitudinally ot the housing, are the bars 32, the outer faces of which are provided withthe bristles 33. At opposite ends ot the housing 10 are disposed 1 whereby the (lislciiiay rotate on the casting,

between the fla-nge thereof, and the adjacent disk 20. Secured to the disk 34;, and surrounding` the opening therein` is a ring 37,

it rotates on the casting. Secured in the center which serves as a bearing' for the disk,

oi the other disk 35v is bearing1 block 3S, through whichthe ad'ja ent end of the shaft 16 extends, saidlshait vbeing;r secured to the block by means ot the key 39, and whereby the disk and shaft rotate together. rihe peripheral odg-cs Voi" `the disks 34 and are turned inwardly, as shown at Sli and 35, and secured to these inturned ends are the ends ci the toraniinous drinn Lit), which is disposed in enclosing relation to the brushes' and against the inner 'tace ot which said brushes bear. Retaining; and strengrtheninnY bands il are secured around the ence oi 'the drum i0 and around its intermediate portion.

The outer end olz the housing termi a door 4t2, which 'is arranged to be rota-ted about tliefadjacent endet the shaft i6, to engage and release the hook portions 13, with relation to the `headed ineiibers The adjacent end of the screen drum, namely the disk 35, is also mounted in the `saine manner, and is: removable to permit access to the interior ot the drum.

In the bottom of the housing, directly below the outer end of the screen drum, is an outlet opening i5, through which the sii'ted iiour is adapted to be discharged to suitable receptacles, such as bags, bins, or the like.

It will be readily seen that, the hopper being filled with flour, and the cra-nk handle being rotated, the two conveyors will also' be rotated, the upper one carrying the lflour into the tube 18, 'from whence the ilour escapes into the drum tOi, through the slots 19, and out through the openings oit the -druni to the lower conveyor. This lower conveyor carries the siifted i'lour to the outlet opening` 45. vThe shejlt oi' the conveyor 16 being- A, the drum to rotate. the adjacent end ot the shaft turning); 'freely in the bearing in' the Vadjacent end of .the housing,k while the brushes,remain stationary', and rub against the inner face of the drum, thus ei'lectively breaking, cleaning', and sifting` the flour.

lncircling` the block 38 a collar fili. and carried by the collar and radiating thereirom, are the yarms -i-T, the outer ends of which are secured to the bars 32. The block 38 freely rotates within the'saine collar.

`What is claimed is:

l.. A flour sifting device comprising a hopper, a housing :connected with the hopsecuredto the block 38, will cause,

per, a rotatable screening druni mounted'in the housing, a iiour conveying tube disposed within the drum andcommunicating with the hopper, alour moving` means in 1 the tube, stationary brushes bearingagainst the interior of the drum, a second flour moving means below the drum in position to receive siited flour, and operative connections between. the moving` means and Vbetween Vone otV the 'four inoying moans and the drum for accomplishiny;Y the Vsimultaneous rotation thereof. f 'i 2. In a flour sitter, .a housing', a rotatableV screening drum in the housing, a scraping' vmeans. within the drurnland .including` end disks and longitudinal brushes connected thereto, saidend disks being centrally aperg tured, a longitudinally slotted tube disposed through the apertures Yoi the said disks,- a screw conveyor disposed in the tube and hayinii; kone end connected with one end of the fai-id druniior rotation therewith, and means on one end oit the housing and engaged through one ot the said end disks'lior holding; the disks against rotation.

p g3( in a flour sitting deyice, Aa housing, a rotatable screening drum in the housing, aV iianped disk mounted in one end oit' the housing, said drum including end plates having central apertures, one oit said .end plates receiving; the iiansed disk therein kand ,fr arranged vtorotate,thereointhe-other ld having a bearingvblock in its. aperture, a tube inountedinthe flanged disk and e;\:- tending within the drum, a Vsta-tionary brushing meansin the drum, Vand a conveyor within the said tube having one lend secured within said block and rotatable inthe adj acent end of the housing, and means connect- .ed with the other end of the conveyor for driving the same and the drinn.

il. A i'lour sitter including a housing, one cnd of the housing being termed with an opening, a tube mounted in the opening at one end, a centrally apertured Vdisk carried by ,said end of the housing andsurroinidino; Y

said openiiw In testimony whereofl affix my signature in the presence of twowitnesses.V v Y JOHNSON BREVER.

Witnesses:v lLoLLmi. Jnrrnns,

iis 

